We've recently released the WW2 German 7.62cm FK36(r) auf Panzerjager Sfl Zgkw 5t (Sd.Kfz 6) "Diana", self-propelled anti-tank gun.

Also the SdKfz 6

and the anti-tank gun carried by the Diana

The improved Pak36(r)

The Soviet 76mm F22 M1936 anti-tank and Anti-aircraft gun

Prices of Diana:
6mm from £2.31
12mm from £5.80
15mm from £8.00
20mm from £15.00
28mm from £25.75

The models are available in most scales.
Everything is 3D printed to order.